What are the reasons for a car not accelerating when the throttle is fully pressed?

[LucyLee]

Reasons for a car not accelerating when the throttle is fully pressed: 1. A dirty throttle position sensor or voltage imbalance can cause electronic throttle failure; 2. Air intake system leakage or blockage; 3. The use of poor-quality gasoline may lead to fuel pump burnout, catalytic converter failure, piston failure, etc., directly affecting engine power. Modern cars use an electronic throttle system. When the driver presses the accelerator pedal, the accelerator pedal position sensor generates corresponding voltage signals that are input into the throttle control unit. After processing the signals, the control unit calculates the basic torque demand of the engine and determines the corresponding basic desired throttle angle. If a sensor sends an incorrect signal during this process, the control unit may misjudge the car's operating conditions, resulting in the inability to accelerate despite pressing the throttle.